Trolley-hanger.



H. w. GONIA. TROLLEY HANGER.

APPLICATION FILED 0OT.25, 1913.

m, an 4 a W m w i, M M 3/ J 8 M m 2 l P i T HENRY W. common BERWIND, WEST VIRGINIA.

TBOLLEY-HANGER.

To all whom it may concern Be it known that I, HENRY W. GoNIA, a citizen of the United States, residing at Berwind, in the county of McDowell and State of West. Virginia,'have invented certain new'and useful Improvements in Trolley-Hangers, of which the following is a specification.

This invention relates to improvements in suspension devices for wires, and particularly to those known as trolley hangers adapted especially for use in mines where it is necessary to provide a special support owing to the disposition of the same in rock,

coal or similar hard material of the ceiling' of said mine.

The advantages and objects of the invention will be more clearly understood when it is mentioned that it is customary to drill a hole in the n ceiling in which the trolley hanger is in. =rte and on accountof the na ture of the material of the ceiling the difliculty of supporting the hanger so that it will not become loose in use'and yet be capable of removal when desired, has been very great. I

The main object of my invention, therefore, has been to provide a hanger which will beefl'ectually insulated from the conductor by an insulating member, the attachment of which member to the hanger supporting member will operate topositively engage the supporting member with the mine ceil- Another objectin view is to provide a construction which will be simple and so arranged that the arts subject to breakage may be easily an quickly replaced without.

the necessity of discarding the whole hanger.

With the above and other objects in view, this inventionconsists in the construction, combination and arrangement of parts all as hereinafter more fully described, claimed and illustrated in the accompanying drawings, wherein: Y I

, Figure 1 ,is a side elevation of a hanger constructed in accordance with my invention. Fig. 2 is a sectional view showing the details of construction of the same; and Fig. 3 is a detail view of the wire engaging member or clamp employed in my device.

Throughout the following detail descrip tion, and on the several figures of the drawings, similar parts are referred to by like reference characters.

Specification of Letters Patent. Y

Patented May 26. 1 '91 4 Application filed October 25, 1913. Serial No. 797,250.

Referring to the drawings by numerals, 1 represents the mine ceiling which as heretofore mentioned generally comprises hard substances and the numeral 2 illustrates an opening drilled in the ceiling. Into the opening is adapted to be inserted the supporting member 3 for my trolley hanger which supporting member has mounted in a' transverse groove at its upper extremity a pair of opposing dogs 4, said dogs being disposed upon the common pivot in 5 assing through the supporting mem ber 3. Mounted upon the supporting member for longitudinal movement thereof is disposed a sleeve'fi which is provided at opposite sides with slots 7, said slots terminating at their lower extremities in beveled or cam surfaces 7' adapted to 006 crate with thedogs 4 for o eration thereo in amanner to be hereina ter more fully set forth.

The lower end of the supporting member 3 is threaded as indicated at 3', and upon this extremity is screwed the insulating member for the trolley hanger comprising the shell 8 of hell shape form having 'on its upper surface a boss 8' provided with a threaded opening 8-whereby the shell and its coiiperating parts may be connected with the supporting member3. Within the bell shaped shell 8 is disposed a removable insulating member 9 of suitable non-conducting material such as fiber or the like, and said member'9 is Jiormed with a central concave recess to accommodate the head of a bolt 10 which forms the support for the wire engaging member or clamp 11. The bolt 10 is secured in a position cooperating with the insulating member by means of the nut 12 having a central opening therethrough through which the bolt-'10 passes and said nut at its upper peripheral portion is threaded for connecting the same to the internally threaded portion of the shell 8. To eflectively insulate the bolt 10 from the shell and the hanger support it is preferably.

4 portion 11 on the pivot 11.

(ill

nally of the supporting member. 35

terposed a further insulating member or washer 15 As shown clearly inFigs. 2 and 3 the wire engaging member 11 comprises the body portion 11 having threadedconnection with the. bolt 10 and formed at one side and extending downwardly is an integral clamping member 11. (looperatingwith the clamping member '11 is a corresponding clamping member 11", pivotally secured to the body The clamping members 11' and 11 are'formed with open ings therethrough in which is disposed a clamping bolt 11 and when the'wire 16, of the usual type, clamping members, this bolt 11 is suitably tightened so as to positively hold the wire in supported condition.-

In actual use the operation of the invention will be clear from the drawin though it may be stated that when the opening 2 has been provided in the ceiling of the mine, the hanger support 3 with its dogs 4 in retracted position and with the sleeve 6 movable thereon is inserted in said opening, which may be of the exact size of the exterior of,

said sleeve. When the support is at its proper position within the opening, the shell 8 of the insulating member is screwed on to the lower threaded extremity of the mem ber 3,- the boss 8 contacting with the sleeve 6 and'causing the same to move longitgudi};

movement of the sleeve brings the cam per-- tion 7 of the sleeve 6 into contact beneath the dogs 4 operating said dogs to project them laterally into the walls placed upon the hanger, the tendency ofthe dogs is to further embedthemselves in the Walls of the openingfland the' amount of this projection of t edogsdependsupondistance ,the shell 8 is. screwed upon the supporting member 3. It

the Weight and the will be also noted from Fig. 2 of the dra'wing that the suppo'rtin member at its head portion is somewhat e arged and the upper or corresponding interior .portion of the sleeve 6 is enlarged so as toprefvent the extension of the dogs 4 into too great an angular position, this being desirable since it is found necessary at times to remove the is disposed between the of the opening. It will be evidentthat as weight is ing supporting member may easily be accomplished when this has been carried out. i As has been heretofore mention'cd, devices of this character 'are subject to break age and when-in the usual types of trolley hangers-the insulating member is formed with insulating material pressed thereinto the whole hanger becomes useless upon the breakage of any of its parts. With my con struetion, however, the insulating -material is so disposed as to be removable at all times shell 8 permitting the'bolt 10 to be withdrawn and access to-the main insulating member 9 had. The provision of an adjustable wire engaging clamp is also conducive to ready installation or disposition of the wire of the electric conductor 16 which may be loosely insertedv members 11 and 11' and when drawn tightly into proper tension, said-clamping members may be tightly clamped about said w1re.

Having thus described my invention, what Iclaim as new is:

1. A trolley hangercomprising a sleeve adapted to be inserted into an o ening, a supporting member disposed. within the sleeve and movableoutwardly of the opening and the sleeve, wall engaging means connected, to the inner s'u porting .member aforesaid, housed by said 5 eeve and movable through-said sleeve in upward opposite directions -upon movement of. the supporting member in the outward direction aforesaid, and means connected to the supporting member for causing said outward movement. 2. A trolley adapted tobe'inserted in an opening, a supporting member disposed within the sleeve, wall engaging dogs connected," to the inner supporting member aforesaid and adapted to legrtended out of the's leeveupon outward movement of the supporting member therefrom and to be withdrawn into the sleeve upon relative movement of said supporting member inwardly of the sleeve, and a'commom-pivot for said dogs. i p

'3."In a trolley hanger a suppor'tin member, wa ll engaging members carried y said supporting member, -and i'novable longitudinally of said support ing' member, an supporting member and adapted 1 to a operate with said sleeve for actuatin the wall engaging members to project the latter beyond said sleeve, said wal bers being arranged for retraction into said sleeve upon lon 'tudinal movement of the supporting mem er.

4. In a trolley hanger,

between the clamping a sleeve disposed about a supporting-melaber, opposing dogs pivotally mounted at one by the unscrewing of the nut 12. from the hanger comprising a sleeve Y mg member and adapted to cooperate with the wall engagin members ofthe support- 'means connected .to the engaging memconnected to the supporting member'and contacting with the sleeve for movement of the same longitudinally of the supporting member to project the dogs therefrom.

5. In a trolley hanger, a supportin member, opposing dogs pivotally mounte at one end of said supporting member, a sleeve, disposed about said supporting member and aving o posing slots therein terminating in cam sur aces a apted for cooperation with the dogs aforesaid, and means removably connected to the su porting member and contacting withthe s eeve for movement of the same longitudinally of the supporting member to project thedogs therefrom, said supportin member bein enlarged at one end and t e opening of t e sleeve aforesaid being correspondingly enlarged whereby to limit movement of the sleeve with respect to the support member.

6. In a trol ey hanger, a supporting member, independent opposing connected to the supporting member for dogs pivotallyl movement outwardly and upwardly into engaging position, wire engaging means, a

member intermediate; the wire engaging means and the supporting member, and means cooperating with the intermediate member to actuate the dogs for extension of {age same laterally from the supporting mem- 7. A trolley hanger comprising a supporting member, wall engaging means pivotally carried by said supporting member and movable outwardly and upwardly into engaging .position, a sleeve for actuating the wall engaging means, wire engaging means supporte by said supporting member, and a rotatable connecting member detachably connecting the wire engaging means with the supporting member and adapted to cooperate with the sleeve to actuate. the wall engaging means upon rotation of the connecting member.

In testimon whereof I afiix my signature in presence'o two witnesses.-

E. C. MARSHALL, A. U. 'hnoma.

copies of thia patent may be obtained for!" cents each, by addressing the Commissioner of Patents,

. Washington, D. 0. 

